How much would this cost?

I want a travel kit (20mm) and a heavier spring kit for my duke 2003 xc u-turn.
how much around would that cost, and could i get that at my lbs? if i cant cud some1 give me a link to where i could buy that stuff.

So would you estimate under $80 for the heavier spring and the 20 mm travel kit.
ill call them to see if they can get it tommorow, their closed on memorial day.
(Wen i sed $80 im talking about installation fees too)